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np.hstack将参数元组的元素数组按水平方向进行叠加
import numpy as np
arr1 = np.array([[1,3], [2,4] ])
arr2 = np.array([[1,4], [2,6] ])
res = np.hstack((arr1, arr2))
print (res)
#
[[1 3 1 4]
[2 4 2 6]]import numpy as np
arr1 = [1,2,3]
arr2 = [4,5]
arr3 = [6,7]
res = np.hstack((arr1, arr2,arr3))
print (res)
#
[1 2 3 4 5 6 7]